Pubdate: Sun, 13 Feb 2000 Source: New York Times (NY) Section: Sports Copyright: 2000 The New York Times Company Contact: 229 West 43rd Street, New York, NY 10036 Fax: (212) 556-3622 Website: http://www.nytimes.com/ Forum: http://www10.nytimes.com/comment/ Author: Robert Sharpe NEW PROBLEMS FOR N.B.A. To the Sports Editor: I'm not surprised that few National Basketball Association players tested positive for marijuana recently ("N.B.A. Finds Minimal Use of Marijuana in First Tests," Feb. 7). Drug tests are easily beaten with a combination of temporary abstinence and masking agents. If the sole purpose of testing is to improve the N.B.A.'s image, the tests are proving very effective. Nonetheless, the success of drug tests may come back to haunt the N.B.A. Marijuana is difficult to mask because its metabolites are fat soluble and remain in the human body for days. Harder drugs like cocaine or heroin are water soluble and exit the human body within 48 hours. Drug testing unintentionally encourages hard drug use. The N.B.A.'s testing policy may compel users of marijuana, which is relatively benign, to make cocaine their drug of choice in order to avoid detection. I would hope that the N.B.A. cares more about the health of its players than its overall image. Robert Sharpe, Washington - --- MAP posted-by: Jo-D